﻿// Copyright © 2010 onwards, Andrew Whewell
// All rights reserved.
//
// Redistribution and use of this software in source and binary forms, with or without modification, are permitted provided that the following conditions are met:
//    * Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
//    * Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.
//    * Neither the name of the author nor the names of the program's contributors may be used to endorse or promote products derived from this software without specific prior written permission.
//
// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHORS OF THE SOFTWARE BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using System.Net;

namespace VirtualRadar.Interface.Database
{
    /// <summary>
    /// A record in the log database that holds information about an IP address that has
    /// been used to connect to the program.
    /// </summary>
    public class LogClient
    {
        /// <summary>
        /// Gets or sets unique ID of the client.
        /// </summary>
        public long Id { get; set; }

        /// <summary>
        /// Gets or sets the IP address of the client.
        /// </summary>
        public string IpAddress { get; set; }

        /// <summary>
        /// Gets or sets the result of the last reverse DNS lookup on the client.
        /// </summary>
        public string ReverseDns { get; set; }

        /// <summary>
        /// Gets or sets the time that <see cref="ReverseDns"/> was acquired.
        /// </summary>
        public DateTime? ReverseDnsDate { get; set; }

        private IPAddress _Address;
        private string _BasedOnIpAddress;
        /// <summary>
        /// Gets the IP address of the client.
        /// </summary>
        public IPAddress Address
        {
            get
            {
                if((_Address == null || IpAddress != _BasedOnIpAddress) && !String.IsNullOrEmpty(IpAddress)) {
                    _BasedOnIpAddress = IpAddress;
                    if(!IPAddress.TryParse(_BasedOnIpAddress, out _Address)) _Address = null;
                }
                return _Address;
            }
        }

        private bool _IsLocal;
        private IPAddress _BasedOnAddress;
        /// <summary>
        /// Gets a bool indicating whether the client is a local client or an Internet client.
        /// </summary>
        public bool IsLocal
        {
            get
            {
                if(_BasedOnAddress == null || _BasedOnAddress != _Address) {
                    _BasedOnAddress = Address;
                    _IsLocal = _BasedOnAddress == null ? false : IPEndPointHelper.IsLocalOrLanAddress(new IPEndPoint(_BasedOnAddress, 80));
                }
                return _IsLocal;
            }
        }
    }
}
